CN102918342B - Cooling box - Google Patents
Cooling box Download PDFInfo
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- CN102918342B CN102918342B CN201080064901.7A CN201080064901A CN102918342B CN 102918342 B CN102918342 B CN 102918342B CN 201080064901 A CN201080064901 A CN 201080064901A CN 102918342 B CN102918342 B CN 102918342B
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- heater
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- 238000001816 cooling Methods 0.000 title abstract description 23
- 238000013461 design Methods 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 86
- 238000009413 insulation Methods 0.000 description 80
- 238000000034 method Methods 0.000 description 28
- 230000008569 process Effects 0.000 description 21
- 238000012545 processing Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- -1 vaccine Substances 0.000 description 2
- 229960005486 vaccine Drugs 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/005—Combined cooling and heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/10—Sensors measuring the temperature of the evaporator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
In order to make an internal temperature of a cooling box storing an item to be refrigerated becomes equal to a set temperature, the cooling box performs the following temperature control by supplying cold air into the box when the internal temperature thereof is higher than the set temperature, and supplying warm air into the box when the internal temperature thereof is lower than the set temperature so that the internal temperature of the cooling box reaches the set temperature. The cooling box includes: an ambient temperature sensor configured to detect an ambient temperature of the cooling box. The cooling box also includes a control device configured to adjust a supply amount of warm air into the cooling box after stopping supply of cold air into the cooling box based on the temperature detected by the ambient temperature sensor; and a thermally insulating door sensor configured to detect whether an opening connected with the interior of the cooling box is in either an open or a closed state, wherein when the thermally insulating door detects a change of the opening from an open state to a closed state, the control device executes control so that the supply amount of warm air becomes equal to a first value until a predetermined period has elapsed, and executes control so that the supply amount of warm air becomes equal to a second value smaller than the first value after the predetermined period has elapsed.
Description
Technical field
The present invention relates to a kind of cold insulated cabinet.
Background technology
There is following a kind of cold insulated cabinet: this cold insulated cabinet possesses refrigerating plant, by making this refrigerating plant intermittently carry out action, by the evaporimeter being configured at the formation refrigerating plant in heat insulation shell, cooling object being cooled to fixing temperature.
When being configured with evaporimeter like this in heat insulation shell, the surface of evaporimeter is easy to attachment frost.This frost can hinder the heat exchange between the cold-producing medium in evaporimeter and the air in heat insulation shell, and therefore the temperature of this cold-producing medium reduces, and refrigerating plant cannot cool in heat insulation shell efficiently.
Therefore, disclose a kind of cold insulated cabinet possessing heater, this heater is configured at the surface of the evaporimeter in heat insulation shell for preventing frost to be attached to, or makes attachment frost fusing (such as with reference to patent document 1) on a surface.Such as, by repeating the circulation making heater action such in the action dwell time of the refrigerating plant carrying out intermitten incessantly, prevent frost to be attached on the surface of evaporimeter, or attachment frost is on a surface removed, cooling object is cooled to fixing temperature simultaneously.
Patent document 1: Japanese Unexamined Patent Publication 6-159890 publication
Summary of the invention
the problem that invention will solve
But the method for the above-mentioned device of repeated freezing incessantly and the action of heater will supply to such as compressor, electric heater etc. problem electric power this point existing energy efficiency difference all the time.
In addition, when the action of repeated freezing device and heater comparably, there is following problem: when the environment temperature of heat insulation shell changes, the temperature in heat insulation shell can be subject to the impact of this change, is therefore difficult to the temperature in heat insulation shell to be maintained fixing.This cold insulated cabinet particularly cannot carry out cold insulation to the cooling object that can not freeze of blood, vaccine, medicine and so on.
for the scheme of dealing with problems
Invention for solving the problem is a kind of cold insulated cabinet, this cold insulated cabinet is that predetermined design temperature carries out following temperature and controls to make the temperature in the case of storage cooled object: the temperature in case higher than during above-mentioned design temperature to cool-air feed in above-mentioned case, temperature in case supplies warm braw lower than during above-mentioned design temperature in above-mentioned case, above-mentioned design temperature is become to make the temperature in case, the feature of this cold insulated cabinet is, there is ambient temp sensor, this ambient temp sensor detects the environment temperature of above-mentioned cold insulated cabinet, control device is provided with in this cold insulated cabinet, the temperature of this control device detected by this ambient temp sensor regulate stop to after cool-air feed in above-mentioned case to the warm braw quantity delivered in above-mentioned case.
the effect of invention
According to the present invention, the temperature in the heat insulation shell of cold insulated cabinet can be maintained fixing while improve energy saving.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of an integrally-built example of the cold insulated cabinet representing present embodiment.
Fig. 2 is the block diagram of an example of the structure of the responsible control of the cold insulated cabinet representing present embodiment.
Fig. 3 is the block diagram of an example of the processing procedure of the CPU representing present embodiment.
Fig. 4 is the chart of an example of the time variations of the operating state of the temperature represented in the heat insulation shell of present embodiment, the temperature of evaporimeter, the operating state of compressor and heater.
Detailed description of the invention
The structure example of===cold insulated cabinet===
See figures.1.and.2 the structure example of the cold insulated cabinet 1 that present embodiment is described.In addition, Fig. 1 is the partial sectional view of the integrally-built example representing cold insulated cabinet 1, and Fig. 2 is the block diagram of an example of the structure of the responsible control representing cold insulated cabinet 1.
As illustrated in Fig. 1 and Fig. 2, cold insulated cabinet 1 is configured to be possessed refrigerating plant 2, heater (heater) 12, heat insulation shell 3, insulated door 4, ambient temp sensor 18 and controls substrate (control device, checkout gear) 10.
As illustrated in Figure 1 like that, refrigerating plant 2 is configured to compressor 11, condenser 21, capillary (pressure reducer) 22 and evaporimeter 23 to utilize refrigerant piping to connect into ring-type.This refrigerating plant 2 makes the decompression of cold-producing medium condenser 21 after condensation in capillary 22 sprayed from compressor 11 evaporate in evaporimeter 23 to obtain cold-producing medium effect.Particularly, the evaporimeter 23 of present embodiment is such as made up of the evaporation tube (evaporation tube) in the shape that crawls, and is configured at the rear side (on the right side of the paper of Fig. 1) in heat insulation shell 3.In addition, in the illustration of Fig. 1, the surface of the refrigerant piping be connected with the entrance side of cold-producing medium of the evaporation tube forming evaporimeter 23 is provided with the evaporator temperature sensor 14 of the such as thermistor of the temperature detecting evaporimeter 23 etc.
As illustrated in Figure 1 like that, heater 12 is on surface in order to prevent frost to be attached to the evaporation tube forming evaporimeter 23 or the heater of the such as electric heater that makes attachment frost fusing on a surface and be configured along this evaporation tube etc.As described later, carrying out energising to the heater 12 of present embodiment makes itself and refrigerating plant 2 alternately carry out action.
As illustrated in Figure 1 like that, heat insulation shell 3 has the opening of the article (i.e. cooled object, such as blood, vaccine, medicine etc.) for taking out and put into cooling object in face side (on the left of the paper of Fig. 1), and rear side (on the right side of the paper of Fig. 1) is therein configured with the evaporimeter 23 with heater 12 across demarcation strip 31.Namely, in the illustration of Fig. 1, in heat insulation shell 3, between insulated door 4 and demarcation strip 31, be formed with the space (accommodating chamber) holding the article cooling object, between demarcation strip 31 and the inwall of rear side, be formed with the space (cooling chamber) that the air in accommodating chamber is cooled.Specifically, suction inlet 31a is formed in the downside (on the downside of the paper of Fig. 1) of demarcation strip 31, and be formed with blow-off outlet 31b in the upside (on the upside of the paper of Fig. 1) of demarcation strip 31, be configured with the evaporimeter 23 with heater 12 in the rear side of suction inlet 31a, be configured with fan 32 in the rear side of blow-off outlet 31b.When fan 32 carries out action, the air in accommodating chamber, by suction inlet 31a, turns back to accommodating chamber (hollow arrow with reference to Fig. 1) by blow-off outlet 31b after the evaporimeter 23 in cooled indoor cools.In addition, in the illustration of Fig. 1, bottom in cooling chamber, be formed and receive the pallet 33 that the frost be attached on the surface of evaporimeter 23 melts the water produced, the water received by this pallet 33 is directed to evaporating pan 35 via the flexible pipe 34 in the Machine Room on the downside of heat insulation shell 3, is evaporated to air afterwards from this evaporating pan 35.In addition, in the illustration of Fig. 1, in the Machine Room on the downside of heat insulation shell 3, be configured with compressor 11 etc., be configured with condenser 21, capillary 22 etc. in heat insulation shell 3 rear side.Further, in the illustration of Fig. 1, temperature sensor 13 in the heat insulation shell that the top in heat insulation shell 3 is configured with the such as thermistor of the temperature detected in heat insulation shell 3 etc.
Insulated door 4 is unlimited or the door of the above-mentioned opening of closed heat insulation shell 3.Particularly when insulated door 4 closing openings, as illustrated in Figure 1, the back side of insulated door 4 closely engages with the seal 3a of the surrounding of opening, makes in heat insulation shell 3 thus and isolated from atmosphere.In addition, in the illustration of Fig. 1, be provided with for the display 17 of indication example as the temperature in heat insulation shell 3 etc. in the front of insulated door 4.In addition, in the illustration of Fig. 1, on insulated door 4 or the opening part of heat insulation shell 3, such as, be provided with and become on-state when opening is in opening-wide state and the insulated door switch (insulated door sensor) 15 becoming off-state when opening is in closed state.
Ambient temp sensor 18 is such as thermistor etc., for detecting the atmospheric temperature of the surrounding of heat insulation shell 3.As illustrated in Figure 1 like that, this ambient temp sensor 18 is configured at the rear side of the pipeline (not shown) set by face side of the Machine Room on the downside of heat insulation shell 3, is used for the action of the fan (not shown) of cooling compressor 11 all the time and is contacted by the air that pipeline is inhaled in Machine Room with utilization.
As illustrated in Figure 2 like that, controlling substrate 10 is such as microcomputer equal controller, possesses CPU 101, memory 102, first timer 103a, the second timer 103b etc.
In the illustration of Fig. 2, CPU 101 controls unifying with lower component: memory 102, first timer 103a, the second timer 103b, for make compressor 11 carry out action or stopping relay 111, for making heater 12 carry out temperature sensor 13, evaporator temperature sensor 14, ambient temp sensor 18, insulated door switch 15 and display 17 in the relay 112 of action or stopping, heat insulation shell.At this, compressor 11 and power supply 16 are connected in series by relay 111 in an on state, cut off this in the off state and are connected in series, and heater 12 and power supply 16 are connected in series by relay 112 in an on state.Cut off this to be in the off state connected in series.As described later, this CPU101 such as performs following process etc. according to the program of preserving in the memory 102: in order to make the temperature convergence in heat insulation shell 3 (between minimum permissible temperature described later and maximum permissible temperature) within the scope of allowable temperature, compressor 11 is made to carry out action or stopping according to the testing result of temperature sensor in heat insulation shell 13, and, actuation time (during action) of the heater 12 correspondingly set according to the testing result of ambient temp sensor 18 is relative to the ratio of the action dwell time (between action withholding period) of compressor 11, heater 12 is made to carry out action or stopping.But be not limited to this " ratio ", in a word, as long as CPU 101 performs following process: according to the temperature detected by ambient temp sensor 18, to regulating to the warm braw quantity delivered in heat insulation shell 3 from heater 12 after stopping from evaporimeter 23 to (case is interior) cool-air feed in heat insulation shell 3.The time such as changing supply warm braw regulates the quantity delivered of this warm braw.
The various data etc. that memory 102 uses when preserving the process determining the program of the processing procedure described later of CPU 101, CPU 102.
First timer 103a carries out timing to the elapsed time etc. after the action stopping of such as heater 12 described later.
Second timer 103b carries out timing to the elapsed time etc. after the opening and closing of such as insulated door 4 described later.
In the present embodiment, control substrate 10 and also play the function of test example as the checkout gear of the exception of ambient temp sensor 18, evaporator temperature sensor 14, insulated door switch 15 etc., concrete determination methods is as follows.
Around temperature sensor 18 and evaporator temperature sensor 14 when, CPU 101 is judged as when the resistance value of detected thermistor exceedes predetermined setting " being in broken string ", be judged as when the resistance value of detected thermistor is approximately 0 " (such as due to water the reason such as immersion and) be in short circuit ".That is, in either case, CPU 101 is judged as ambient temp sensor 18 and evaporator temperature sensor 14 extremely.
When insulated door switch 15, but such as when although the time of the on-state of the insulated door switch 15 obtained by the second timer 103b timing, to have exceeded temperature that the predetermined stipulated time detects by temperature sensor in heat insulation shell 13 be below predetermined set point of temperature, CPU 101 is judged as insulated door switch 15 "abnormal".In addition, this stipulated time and this set point of temperature are such as respectively set at following value: if the duration of the opening-wide state of the opening of the heat insulation shell 3 formed by insulated door 4 exceedes this stipulated time, then the temperature in heat insulation shell 3 will inevitably exceed this set point of temperature.
The action case of===cold insulated cabinet===
The action case of the cold insulated cabinet 1 possessing said structure is described with reference to Fig. 3 and Fig. 4.In addition, Fig. 3 is the block diagram of an example of the processing procedure representing the CPU 101 controlling substrate 10, and Fig. 4 is the chart of an example of the time variations of the operating state of the temperature represented in heat insulation shell 3, the temperature of evaporimeter 23, the operating state of compressor 11 and heater 12.
The processing procedure >>> of <<<CPU
As illustrated in Figure 3 like that, CPU 101 judges whether insulated door switch 15 changes off-state (S100) from off-state (such as corresponding to the closed state of the opening of heat insulation shell 3) into via on-state (such as corresponding to the opening-wide state of the opening of heat insulation shell 3) again.
In addition, in the present embodiment, the level of a series of signal with this transformation received from insulated door switch 15 time CPU 101 such as the prior state transfer by each insulated door switch 15 (change off-state into from on-state or change on-state into from off-state) was preserved in the memory 102 accordingly with the time of reception obtained by the second timer 103b timing.Then, CPU 101 reads these information from memory 102 in the step s 100, and the information according to reading judges in the step s 100 or whether the nearest past insulated door 4 more Zao than step S100 was once opened and closed.
<1. insulated door does not have the situation > of opening and closing
When being judged as that insulated door 4 is not opened and closed (S100: "No"), CPU101 drives relay 111 to start (S101) to make the action of compressor 11.Thus, refrigerating plant 2 starts action.
CPU 101 judges whether the temperature detected by temperature sensor in heat insulation shell 13 reaches the minimum permissible temperature (S102) in predetermined heat insulation shell 3.When being judged as that the temperature in heat insulation shell 3 does not reach minimum permissible temperature (S102: "No"), CPU 101 performs the process of step S102 again.When being judged as that the temperature in heat insulation shell 3 reaches minimum permissible temperature (S102: "Yes"), CPU 101 drives relay 111 to stop (S103) to make the action of compressor 11.Thus, refrigerating plant 2 stops action.CPU 101 judges whether (being generically and collectively referred to as above " sensor ") such as ambient temp sensor 18, evaporator temperature sensor 14, insulated door switches 15 exists exception (S104).
<1-1. sensor does not have abnormal situation >
When being judged as that sensor does not have abnormal (S104: "No"), CPU 101 judges that whether the temperature detected by evaporator temperature sensor 14 is lower than predetermined set point of temperature (S105).In addition, the set point of temperature of the evaporimeter 23 of present embodiment such as refers to the minimum permissible temperature for making the temperature in heat insulation shell 3 be not less than the evaporimeter 23 of above-mentioned minimum permissible temperature.
<1-1-1. the temperature of evaporimeter is the situation > of more than set point of temperature
In the temperature being judged as being detected by evaporator temperature sensor 14 not lower than (S105: "No") predetermined set point of temperature (namely more than set point of temperature), CPU 101 judges that whether the temperature (hereinafter referred to as " environment temperature ") detected by ambient temp sensor 18 is lower than predetermined set point of temperature (S106).In addition, the set point of temperature relating to environment temperature of present embodiment such as refers to and the temperature in heat insulation shell 3 to be maintained within the scope of allowable temperature (between minimum permissible temperature and maximum permissible temperature) and the temperature that can shorten the actuation time of heater 12.At this, the shortening of the actuation time of heater 12 means specifically: make be less than actuation time lower than the heater 12 under the environment temperature of this set point of temperature relative to the ratio (the first ratio) of the action dwell time of compressor 11 relative to the ratio (the second ratio) of the action dwell time (between action withholding period) of compressor 11 actuation time (during action) of the heater 12 under the environment temperature of more than this set point of temperature.But, be not limited to this " ratio ".First ratio and first is worth corresponding, this first value represent around temperature lower than after stopping from evaporimeter 23 to (case in) cool-air feed in heat insulation shell 3 when set point of temperature from heater 12 to the warm braw quantity delivered in heat insulation shell 3.In addition, second ratio is corresponding with (being less than the first value) the second value, after stopping from evaporimeter 23 to cool-air feed in heat insulation shell 3 when this second value represents that temperature is more than set point of temperature around from heater 12 to the warm braw quantity delivered in heat insulation shell 3.The time such as changing supply warm braw regulates this warm braw quantity delivered.
<1-1-1-1. environment temperature is the situation > of more than set point of temperature
When being judged as environment temperature not lower than (S106: "No") predetermined set point of temperature (namely more than set point of temperature), CPU 101 such as reads the ratio (second ratio) of actuation time relative to the action dwell time of compressor 11 of heater 12 from memory 102, set heater 12 do not carry out action and the standby stipulated time (S107) based on this ratio.In addition, in the present embodiment, if such as carry out by experiment etc. the action dwell time (wherein, the scheduled time) etc. of above-mentioned second ratio when predefined environment temperature is more than set point of temperature lower than above-mentioned first ratio when set point of temperature, environment temperature, compressor 11.Particularly when being less than second ratio of 1, according to the illustration of Fig. 4, the actuation time (time tc) of heater 12 is set to the actuation time of immediately compressor 11 thereafter mutually continuous.Therefore, in the step S107 of present embodiment, if CPU 101 reads second ratio corresponding with the information of the environment temperature representing more than set point of temperature from memory 102, represents the information of the action dwell time of compressor 11 etc., according to the information read, set the stipulated time (being time tb in the illustration of Fig. 4) from the action of compressor 11 stops to the action of heater 12.But, be not limited thereto, in memory 102, also can preserve the information of the stipulated time representing predetermined.In addition, be not limited to actuation time of heater 12 with the actuation time of immediately compressor 11 thereafter continuous mutually, such as also can and then action by heater 12 after the action of compressor 11 stops.That is, from heater 12 to the warm braw of (case in) in heat insulation shell 3 supply also can with from evaporimeter 23 to the stopping of the cool-air feed in heat insulation shell 3 mutually continuously.
CPU 101 makes the first timer 103a start timing (S108) after being resetted by the first timer 103a, judges whether the time t obtained by the first timer 103a timing has reached the stipulated time (S109) set in step S107.When being judged as that the time t obtained by the first timer 103a timing does not reach the stipulated time (S109: "No"), CPU 101 performs the process of step S109 again.Therebetween, compressor 11 and heater 12 all stop action.When being judged as that the time t obtained by the first timer 103a timing has reached the stipulated time (S109: "Yes"), CPU 101 drives relay 112 to start to be energized (S110) to heater 12.Thus, heater 12 starts action.
CPU 101 judges the maximum permissible temperature (S111) in the heat insulation shell 3 whether temperature detected by temperature sensor in heat insulation shell 13 has reached predetermined.In addition, after, the design temperature between above-mentioned minimum permissible temperature and maximum permissible temperature is set to the target temperature of present embodiment.As an example, target temperature is the obtained temperature that minimum permissible temperature and maximum permissible temperature is averaged.
When being judged as that the temperature in heat insulation shell 3 does not reach maximum permissible temperature (S111: "No"), CPU 101 performs the process of step S111 again.When being judged as that the temperature in heat insulation shell 3 has reached maximum permissible temperature (S111: "Yes"), the energising (S112) that CPU 101 drives relay 112 to stop heater 12.Thus, heater 12 stops action.Afterwards, CPU 101 performs the process of step S100 again.
<1-1-1-2. environment temperature is lower than the situation > of set point of temperature
As illustrated in Figure 3 like that, when being judged as that environment temperature is lower than (S106: "Yes") when predetermined set point of temperature, CPU 101 performs above-mentioned step S110, the process of S111, S112.In addition, in the present embodiment, be located at environment temperature and be set to 1 lower than above-mentioned the first ratio relating to environment temperature when set point of temperature.Therefore, step S106 is process after "Yes" with the process of the step S110 continuing to be energized to heater 12 in the action dwell time of compressor 11, S111, S112 is equal.
According to more than, as illustrated in Figure 4, according to environment temperature, the ratio of the actuation time of heater 12 relative to the action dwell time of compressor 11 can be changed to " tc/ (tb+tc) " (<1) from " ta/ta " (=1), become target temperature (such as (T1+T2)/2) to make the temperature in heat insulation shell 3.In general, environment temperature is higher, make the heat of the heater 12 of the temperature in heat insulation shell 3 needed for target temperature fewer, therefore do not make heater 12 action and the time tb (stipulated time) that makes it standby by arrange in the action dwell time of compressor 11 as in the present embodiment, energy saving improves.On the other hand, setup times tb suppresses the superheated of heater 12, is easy to the temperature in heat insulation shell 3 to be maintained target temperature thus.That is, the temperature in heat insulation shell 3 can be maintained fixing while improve energy saving.
In addition, as illustrated in Figure 4, tc actuation time of heater 12 can be carried out controlling making mutually continuous with the actuation time of immediately compressor 11 thereafter.The timing setting carrying out standby time tb (stipulated time) by being failure to actuate by heater 12 carries out the timing of time tc of action at heater 12 before, the time tb that can not be such as 0 ° of below C in the temperature of evaporimeter 23 makes heater 12 carry out action, and makes heater 12 carry out action in the temperature of evaporimeter 23 higher than the time tc of 0 ° of C.That is, the time point by uprising in the temperature of evaporimeter 23 makes heater 12 carry out action, can reduce the electric power that will be supplied to this heater 12.
In addition, as illustrated in Figure 4, temperature, lower than when set point of temperature, the actuation time of heater 12 can be set to " ta/ta " (first ratio) relative to the ratio of the action dwell time of compressor 11 around, on the other hand, when temperature is more than set point of temperature around, the actuation time of heater 12 is set to relative to the ratio of the action dwell time of compressor 11 " tc/ (tb+tc) " (the second ratio) that be less than the first ratio.By this set point of temperature being such as set to the target temperature that can maintain in heat insulation shell 3 and making the temperature that the second ratio is little compared with the first ratio, can further effectively maintain target temperature and improve energy saving further.
In addition, the first above ratio is all 1, but is not limited thereto, as long as be at least greater than the ratio of the second ratio, then such as also can be less than 1.
<1-1-2. the temperature of evaporimeter is lower than the situation > of set point of temperature
As illustrated in Figure 3 like that, in the temperature being judged as being detected by evaporator temperature sensor 14 lower than (S105: "Yes") when predetermined set point of temperature, CPU 101 performs above-mentioned step S110, the process of S111, S112.In addition, in the present embodiment, by evaporimeter 23 lower than the heater 12 during set point of temperature actuation time, to be set greater than evaporimeter 23 be more than set point of temperature relative to the ratio (the second ratio) of the action dwell time of compressor 11 time actuation time of heater 12 relative to the ratio (the first ratio) of the action dwell time of compressor 11.Particularly, if second ratio relating to the temperature of evaporimeter 23 of present embodiment is set as with above-mentioned relate to that first of environment temperature is in equal proportions 1.Therefore, to be process after "Yes" equal with the process of the step S110 continuing to be energized to heater 12 in the action dwell time of compressor 11, S111, S112 for step S105.In addition, if first ratio relating to the temperature of evaporimeter 23 of present embodiment is also set to be in equal proportions with above-mentioned second of the environment temperature that relates to.
According to more than, when such as pile up on the surface of evaporimeter 23 have the temperature on frost and this surface to reduce, regardless of environment temperature, all increase the ratio of actuation time relative to the action dwell time of compressor 11 of heater 12, more effectively can make the frost fusing be attached on evaporimeter 23 thus.Thus, inhibit the reduction of the cooling capacity caused by the frost of evaporimeter 23, thus be easy to the temperature in heat insulation shell 3 to be maintained fixing.
In addition, the second above ratio is 1, but is not limited thereto, as long as be at least greater than the ratio of the first ratio, then such as also can be less than 1.
<1-2. the situation > of sensor abnormality
As illustrated in Figure 3 like that, when being judged as sensor abnormality (S104: "Yes"), CPU 101 performs above-mentioned step S110, the process of S111, S112.In addition, in the present embodiment, the ratio of fixing independently is set to actuation time of the heater 12 when sensor abnormality relative to the ratio of the action dwell time of compressor 11 and environment temperature.Particularly, if the fixing ratio of present embodiment be set to above-mentioned relate to that first of environment temperature is in equal proportions 1.Therefore, to be process after "Yes" equal with the process of the step S110 continuing to be energized to heater 12 in the action dwell time of compressor 11, S111, S112 for step S104.
According to more than, when sensor abnormality, the actuation time of heater 12 can be set to fixing ratio relative to the ratio of the action dwell time of compressor 11.Thus, such as cannot detect that environment temperature is inferior lower than the situation of set point of temperature, regardless of environment temperature, all the actuation time of heater 12 is maintained fixing relative to the ratio of the action dwell time of compressor 11, the danger that the article of cooling object are freezed can be reduced thus.In addition, such as cannot detect that the temperature of evaporimeter 23 is inferior lower than the situation of set point of temperature, regardless of environment temperature, all the actuation time of heater 12 is maintained fixing relative to the ratio of the action dwell time of compressor 11, the reduction of the cooling capacity caused by the frost of evaporimeter 23 can be suppressed thus.
In addition, above " fixing ratio " is 1, but is not limited thereto, such as, also can be less than 1.
<2. there is the situation > of the opening and closing of insulated door
As illustrated in Figure 3 like that, when being judged as that insulated door 4 has carried out opening and closing (S100: "Yes"), CPU 101 makes the second timer 103b start timing (S113) after being resetted by the second timer 103b, judges whether the time t obtained by the second timer 103b timing reaches stipulated time (specified time limit) (S114).In addition, in the present embodiment, as described later, when insulated door 4 by the opening of heat insulation shell 3 first open wide then close, during before the stipulated time, the actuation time of heater 12 is set to predetermined ratio (the first ratio) relative to the ratio of the action dwell time of compressor 11 action of heater 12 is controlled.Then, after have passed through the stipulated time, the actuation time of heater 12 is set to relative to the ratio of the action dwell time of compressor 11 the predetermined ratio (the second ratio) being less than the first ratio the action of heater 12 is controlled.Particularly, in the present embodiment, if the first ratio is set to relate to the 1, second ratio that first of environment temperature is in equal proportions also be set to be in equal proportions with above-mentioned second of the environment temperature that relates to above-mentioned.In addition, the stipulated time of step S114 is determined in advance as such as enough time of the frost that is attached on the surface of evaporimeter 23 being dissolved and preserves in the memory 102.
When being judged as that the time t obtained by the second timer 103b timing does not reach the stipulated time (S114: "No"), CPU 101 performs following process.
First, CPU 101 drives relay 111 to start (S115) to make the action of compressor 11, judges whether the temperature detected by temperature sensor in heat insulation shell 13 reaches the minimum permissible temperature (S116) in predetermined heat insulation shell 3.When being judged as that the temperature in heat insulation shell 3 does not reach minimum permissible temperature (S116: "No"), CPU 101 performs the process of step S116 again, when being judged as that the temperature in heat insulation shell 3 has reached minimum permissible temperature (S116: "Yes"), CPU 101 drives relay 111 to stop (S117) to make the action of compressor 11.
Then, CPU 101 drives relay 112 to start to be energized (S118) to heater 12, judges whether the temperature detected by temperature sensor in heat insulation shell 13 reaches the maximum permissible temperature (S119) in predetermined heat insulation shell 3.When being judged as that the temperature in heat insulation shell 3 does not reach maximum permissible temperature (S119: "No"), CPU 101 performs the process of step S119 again, when being judged as that the temperature in heat insulation shell 3 reaches maximum permissible temperature (S119: "Yes"), the energising (S120) that CPU 101 drives relay 112 to stop heater 12.In addition, above, the action of control heater 12 is carried out with the first ratio equal with 1.
CPU 101 performs the process (judging whether the time t obtained by the second timer 103b timing reaches the stipulated time) of step S114 again, and when being judged as that this time t reaches the stipulated time, (S114: "Yes") performs the process of step S100 again.
According to more than, as illustrated in Figure 4, when the opening and closing of insulated door 4 being detected (moment t2), during before the stipulated time, the actuation time of heater 12 can be set to " ta'/ta ' " (=1) (the first ratio) relative to the ratio of the action dwell time of compressor 11.In addition, though illustrate in Fig. 4, but the ratio (the second ratio) being less than the first ratio can be applied after have passed through the stipulated time.In general, when insulated door 4 has carried out opening and closing, vapor in the atmosphere has entered in heat insulation shell 3, thus is easy to the surface attachment frost at evaporimeter 23.Therefore, by improving the ratio of actuation time relative to the action dwell time of compressor 11 of heater 12 in environment temperature is as in the present embodiment how all during the stipulated time, the frost fusing that can more effectively will such as be attached on evaporimeter 23.Thus, inhibit the reduction of the cooling capacity caused by the frost of evaporimeter 23, thus be easy to the temperature in heat insulation shell 3 to be maintained fixing.
In addition, the first above ratio is 1, but is not limited thereto, as long as be at least greater than the ratio of the second ratio, then such as also can be less than 1.
<<< action case >>>
Based on the processing procedure of the above CPU 101 described, the action case described below being performed by compressor 11 and heater 12.
< environment temperature is lower than situation (before the moment t 1) > of set point of temperature
According to the illustration of Fig. 4, when the temperature of compressor 11 in heat insulation shell 3 is maximum permissible temperature T1, start action, stop action when the temperature in heat insulation shell 3 reaches minimum permissible temperature T2.Therebetween, the temperature of evaporimeter 23 drops to temperature T4 from temperature T3.The post-heater 12 of action is stopped and then starting action at compressor 11.During temperature in heat insulation shell 3 rises to maximum permissible temperature T1 from minimum permissible temperature T2, the temperature of evaporimeter 23 is after rising to 0 ° of C from temperature T4, maintain 0 ° of C during frost fusing on the surface of evaporimeter 23, when frost melts completely, rise to temperature T3 from 0 ° of C.That is, the surface of heater 12 pairs of evaporimeters 23 is utilized to defrost.
After heater 12 stops action, and then compressor 11 starts action, and this action lasts till that the temperature in heat insulation shell 3 reaches minimum permissible temperature T2.
Like this, when temperature is lower than set point of temperature around, replaces and carry out the action of compressor 11 and the action of heater 12 incessantly.That is, ta actuation time of heater is 1 relative to the ratio of the action dwell time ta of compressor 11.
< environment temperature is situation (after the moment t1) > of more than set point of temperature
According to the illustration of Fig. 4, in moment t1 environment temperature from when switching to more than set point of temperature lower than set point of temperature, heater 12 has just stopped not carrying out in the stipulated time tb after action action and standby at compressor 11, after have passed through this stipulated time tb, and then start action.Then, heater 12 stops action when the temperature in heat insulation shell 3 reaches maximum permissible temperature T1.
Consequently, the actuation time of heater 12 is time tc, and the action dwell time of compressor 11 is time (tb+tc).In addition, according to the time variations of the temperature of evaporimeter 23, during the time (tb+tc), defrosted in the surface of evaporimeter 23.
In addition, according to the illustration of Fig. 4, carry out opening and closing at moment t2 insulated door 4.In this case, although environment temperature is more than set point of temperature, but the actuation time of heater 12 is set to " ta'/ta' " (=1) (the first ratio) relative to the ratio of the action dwell time of compressor 11 control the action of heater 12, afterwards, this ratio is set to the action of the second ratio to heater 12 being less than the first ratio to control (but not shown in Fig. 4).
In addition, in the illustration of Fig. 4, carried out opening and closing at moment t2 insulated door 4, but be not limited thereto, such as, also can be set to the temperature of evaporimeter 23 lower than set point of temperature, or sensor can also be set to there occurs exception.
Other embodiment of======
Above-mentioned embodiment is for ease of understanding the present invention, and being not intended to limit property explain the present invention.The present invention carries out changing with can not departing from its aim, improvement etc., and also comprises its equivalent in the present invention.
In the above-described embodiment, heater is undertaken adding thermally operated heater 12 by energising, but be not limited thereto.In a word, as long as heater can be configured at the evaporimeter 23 in heat insulation shell 3 to prevent frost to be attached to surface on or unit that attachment frost fusing on a surface switched on and off in desired timing, then can be any unit.
In the above-described embodiment, by the action or the stopping that driving relay 112 to carry out control heater 12, but be not limited thereto, such as, the element such as IGCT, bidirectional triode thyristor (TRIAC) also can be used to control.
In the above-described embodiment, insulated door sensor is insulated door switch 15, but is not limited thereto, and in a word, as long as detect the unit of the opening and closing of insulated door 4, then can be any unit.
In the above-described embodiment, evaporimeter 23 is configured in the space (cooling chamber) that is separated out by demarcation strip 31 in heat insulation shell 3, but is not limited thereto, and also can not there is demarcation strip 31.
description of reference numerals
1: cold insulated cabinet; 2: refrigerating plant; 3: heat insulation shell; 3a: seal; 4: insulated door; 10: control substrate; 11: compressor; 12: heater: 13: temperature sensor in heat insulation shell: 14: evaporator temperature sensor; 15: insulated door switch; 16: power supply; 17: display; 18: ambient temp sensor; 21: condenser; 22: capillary (capillary tube); 23: evaporimeter; 31: demarcation strip: 31a: suction inlet; 31b: blow-off outlet; 32: fan; 33: pallet; 34: flexible pipe; 35: evaporating pan; 101:CPU; 102: memory; 103a: the first timer; 103b: the second timer; 111,112: relay.
Claims (4)
1. a cold insulated cabinet, be that predetermined design temperature carries out following temperature and controls in order to make the temperature in the case of storage cooled object: the temperature in case higher than during above-mentioned design temperature to cool-air feed in above-mentioned case, temperature in case supplies warm braw lower than during above-mentioned design temperature in above-mentioned case, above-mentioned design temperature is become to make the temperature in case, the feature of this cold insulated cabinet is
Possess ambient temp sensor, this ambient temp sensor detects the environment temperature of above-mentioned cold insulated cabinet,
This cold insulated cabinet also possesses:
Control device, its temperature detected by this ambient temp sensor regulate stop to after cool-air feed in above-mentioned case to the warm braw quantity delivered in above-mentioned case; And
Insulated door sensor, its opening be communicated in above-mentioned case detecting above-mentioned cold insulated cabinet is in which state in opening wide and closing,
Wherein, when above-mentioned insulated door sensor detect above-mentioned opening from open wide be changed to closed, above-mentioned control device above-mentioned warm braw quantity delivered is controlled be the first value until through specified time limit, by second value of above-mentioned warm braw quantity delivered control for being less than above-mentioned first value during have passed through afore mentioned rules after.
2. a cold insulated cabinet, be that predetermined design temperature carries out following temperature and controls in order to make the temperature in the case of storage cooled object: the temperature in case higher than during above-mentioned design temperature to cool-air feed in above-mentioned case, temperature in case supplies warm braw lower than during above-mentioned design temperature in above-mentioned case, above-mentioned design temperature is become to make the temperature in case, the feature of this cold insulated cabinet is
Possess ambient temp sensor, this ambient temp sensor detects the environment temperature of above-mentioned cold insulated cabinet,
This cold insulated cabinet also possesses:
Control device, its temperature detected by this ambient temp sensor regulate stop to after cool-air feed in above-mentioned case to the warm braw quantity delivered in above-mentioned case; And
Evaporator temperature sensor, it detects the temperature of evaporimeter,
Wherein, above-mentioned control device is when the temperature of above-mentioned evaporimeter is more than set point of temperature, above-mentioned warm braw quantity delivered being controlled to be the second value, when the temperature of above-mentioned evaporimeter is lower than afore mentioned rules temperature, above-mentioned warm braw quantity delivered being controlled the first value for being greater than above-mentioned second value.
3. a cold insulated cabinet, be that predetermined design temperature carries out following temperature and controls in order to make the temperature in the case of storage cooled object: the temperature in case higher than during above-mentioned design temperature to cool-air feed in above-mentioned case, temperature in case supplies warm braw lower than during above-mentioned design temperature in above-mentioned case, above-mentioned design temperature is become to make the temperature in case, the feature of this cold insulated cabinet is
Possess ambient temp sensor, this ambient temp sensor detects the environment temperature of above-mentioned cold insulated cabinet,
This cold insulated cabinet also possesses:
Control device, its temperature detected by this ambient temp sensor regulate stop to after cool-air feed in above-mentioned case to the warm braw quantity delivered in above-mentioned case; And
Checkout gear, it detects the exception of above-mentioned ambient temp sensor,
Wherein, when above-mentioned detection device detects the exception of above-mentioned ambient temp sensor, above-mentioned control device carries out controlling to make above-mentioned warm braw quantity delivered be always fixing quantity delivered.
4. the cold insulated cabinet according to any one in claims 1 to 3, is characterized in that,
Above-mentioned cold air is the air cooled by the evaporation of the cold-producing medium in the evaporimeter of freeze cycle, this freeze cycle utilizes refrigerant piping to connect into ring-type to major general's compressor, condenser, pressure reducer, evaporimeter and is formed, and above-mentioned warm braw is the air after being heated by electric heater.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009297749A JP5756898B2 (en) | 2009-12-28 | 2009-12-28 | Cold storage |
| JP2009-297749 | 2009-12-28 | ||
| PCT/JP2010/073363 WO2011081098A1 (en) | 2009-12-28 | 2010-12-24 | Cooling box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102918342A CN102918342A (en) | 2013-02-06 |
| CN102918342B true CN102918342B (en) | 2015-06-17 |
Family
ID=44226504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080064901.7A Active CN102918342B (en) | 2009-12-28 | 2010-12-24 | Cooling box |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9772138B2 (en) |
| EP (1) | EP2520880B1 (en) |
| JP (1) | JP5756898B2 (en) |
| CN (1) | CN102918342B (en) |
| WO (1) | WO2011081098A1 (en) |
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| ITTO20131093A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| ITTO20131095A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| ITTO20131094A1 (en) * | 2013-12-31 | 2015-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CHECKING A DEEP FREEZING PHASE IN A REFRIGERATOR OF THE COMBINED SINGLE-ADJUSTMENT TYPE, AND ITS REFRIGERATOR APPARATUS |
| KR101718414B1 (en) * | 2014-10-27 | 2017-03-22 | 주식회사 두비컴퓨팅 | Rack Mount Server System and Method of Controlling the Same |
| KR101594152B1 (en) * | 2015-09-24 | 2016-02-15 | (주)터보소프트 | Apparatus and method for monitoring state of cryogenic freezer |
| KR20180120975A (en) * | 2017-04-28 | 2018-11-07 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
| KR102418143B1 (en) * | 2017-04-28 | 2022-07-07 | 엘지전자 주식회사 | Refrigerator and Controlling method for the same |
| KR102434984B1 (en) * | 2018-05-03 | 2022-08-22 | 엘지전자 주식회사 | Refrigerator |
| US11493260B1 (en) | 2018-05-31 | 2022-11-08 | Thermo Fisher Scientific (Asheville) Llc | Freezers and operating methods using adaptive defrost |
| US11079163B2 (en) * | 2018-06-27 | 2021-08-03 | Standex International Corporation | Method for controlling defrost in refrigeration systems |
| WO2020208914A1 (en) * | 2019-04-08 | 2020-10-15 | 株式会社日立ハイテク | Automatic analysis device |
| WO2020256716A1 (en) * | 2019-06-19 | 2020-12-24 | Electrolux Home Products, Inc. | Temperature control of refrigeration compartments with a variable speed compressor and a variable speed evaporator fan |
| WO2021225308A1 (en) * | 2020-05-07 | 2021-11-11 | 엘지전자 주식회사 | Refrigerator |
| EP4148357A4 (en) * | 2020-05-07 | 2024-05-01 | LG Electronics Inc. | Refrigerator |
| CN115328235B (en) * | 2022-10-14 | 2023-01-03 | 成都运荔枝科技有限公司 | Cold chain transportation temperature monitoring method and system |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5756898B2 (en) | 2015-07-29 |
| EP2520880A4 (en) | 2017-01-11 |
| CN102918342A (en) | 2013-02-06 |
| US9772138B2 (en) | 2017-09-26 |
| JP2011137593A (en) | 2011-07-14 |
| US20130000336A1 (en) | 2013-01-03 |
| EP2520880B1 (en) | 2018-07-18 |
| WO2011081098A1 (en) | 2011-07-07 |
| EP2520880A1 (en) | 2012-11-07 |
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Owner name: PANASONIC HEALTHCARE HOLDINGS CO., LTD. Free format text: FORMER OWNER: PANASONIC HEALTHCARE + MEDICAL EQUIPMENT CO., LTD. Effective date: 20141209 |
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Effective date of registration: 20141209 Address after: Tokyo, Japan, Japan Applicant after: Panasonic's health medical treatment is controlled interest Co., Ltd. Address before: Ehime Prefecture, Japan Applicant before: Panasonic Healthcare Co., Ltd |
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Address after: The new bridge of the Tokyo capital, Tokyo, Japan, No. 38 times 5 Patentee after: Pu Hei holding company Address before: Tokyo, Japan, Japan Patentee before: Panasonic's health medical treatment is controlled interest Co., Ltd. |
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Address after: No. 38, No. 5, No. 38, two, Xinqiao, Tokyo, Japan Patentee after: Pu Hei holding company Address before: The new bridge of the Tokyo capital, Tokyo, Japan, No. 38 times 5 Patentee before: Pu Hei holding company |